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MASB Mudsill Anchor for CMU Block

MASB

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The MASB is a mudsill anchor designed specifically to anchor a mudsill to concrete block foundations or walls. The unique design eliminates problems associated with misplaced anchor bolts. The MASB easily installs into wet concrete-grouted CMU block for a time-saving alternative to anchor bolts.

Key Features

  • Offset design for use in concrete block applications
  • One-piece design, so there are no nuts and washers to lose
  • Unique design eliminates concerns about stud placement

Material

  • 16 gauge

Finish

  • Galvanized or ZMAX® coating; see Corrosion Information

Installation

  • Use all specified fasteners; see General Notes.
  • Fill CMU cell with concrete grout first, then place MASB into the grouted cell and adjust into position. Attach mudsill to anchor only after the concrete grout cures.
  • CMU shall have a minimum f'm = 1,500 psi.
  • The MASB mudsill anchors were tested in standard 8" CMU.

Related Literature

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C-C-2019
A catalog including new product information as well as any applicable specification and installation instructions for wood-to-wood and wood-to-concrete structural connectors.
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Conectores para la construcción con madera 2019–2020
C-C-2019SP
El catálogo incluye información sobre nuevos productos, así como especificaciones e instrucciones de instalación aplicables para conectores estructurales de madera a madera y de madera a concreto.
Catalog
Code-Compliant Sill Plate Anchorage Solutions
T-A-SILPLANCH18
Sill plate/mudsill anchorage solutions for engineered and prescriptive applications into concrete or grout-filled CMU using Titen HD® (THD), MASA/MASAP, MAB/MASB, AT-XP®, SET-XP® or SET-3G™.
Technical Bulletin

Product Information Table

Fastener Production Information and Stuff & Things
Model No. Ga. Coating/Material Packaging Qty.
MASB 16 Zinc Galvanized, G90 1
MASBZ 16 ZMAX® 1

Load Tables

    These products are available with additional corrosion protection.

LMAZ/MAB/MASB Mudsill Anchors Load Table
  1. Loads have been increased for wind or earthquake loading, with no further increase allowed. Reduce where other loads govern.
  2. For uplift loads, provide attachment from mudsill to building's structural components to prevent cross-grain bending.
  3. For concrete stem wall applications, allowable loads are based on a minimum concrete stem wall width of 6".
  4. Fasteners: Nail dimensions in the table are listed diameter by length. For additional information, see Fastener Types and Sizes Specified for Simpson Strong-Tie Connectors.

Prescriptive Anchor Spacing

    These products are available with additional corrosion protection.

Prescriptive Anchor Spacing
  1. "Prescriptive" denotes designs per the IRC or conventional provisions of the IBC for wind speeds 140 mph or less, or for Seismic Design Category D and less (SDC E and less in IBC).
  2. Spacing is based on parallel-to-plate load direction only.
  3. Place anchors not more than 12" from the end of sill and splices per code.
  4. Grout-filled CMU (GFCMU) shall have a minimum compressive strength of f'm = 1,500 psi.
  5. Spacings apply to DF, SP, and HF sill plates.

Code Reports & Compliance

Drawings

PDF DWG DXF RFA IFC SAT

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